Solar water heaters work by absorbing sunlight in solar collectors and saving the heated water in a storage tank. Both active and passive solar water heaters are available. Active systems are ...

Dear Jim: We have teenage daughters who take long showers. Our water heating costs are sky high. We are on a tight budget, but want to use some solar water heating. Is there a do-it-yourself system we ...

Heating water is one of the most energy-consuming and costly household tasks. According to the Department of Energy, it makes up roughly 18% of a standard home's monthly energy budget. And if you use ...

From a distance, the energy system on top of a college residence hall in Omaha, Nebraska looks like photovoltaic panels. But as you get closer, it becomes clear that this is something different, with ...